| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Acre; Embrapa Agropecuária Oeste; Embrapa Amazônia Ocidental; Embrapa Arroz e Feijão; Embrapa Meio-Norte; Embrapa Rondônia; Embrapa Roraima; Embrapa Semiárido; Embrapa Soja; Embrapa Solos; Embrapa Territorial; Embrapa Unidades Centrais. MenosEmbrapa Acre; Embrapa Agropecuária Oeste; Embrapa Amazônia Ocidental; Embrapa Arroz e Feijão; Embrapa Meio-Norte; Embrapa Rondônia; Embrapa Roraima; Embrapa Semiárido; Embrapa Soja; Embrapa Solos... Mostrar Todas |
|
Data corrente: |
17/01/2014 |
|
Data da última atualização: |
14/08/2014 |
|
Tipo da produção científica: |
Documentos |
|
Autoria: |
GAZZONI, D. L. |
|
Afiliação: |
DECIO LUIZ GAZZONI, CNPSO. |
|
Título: |
O impacto do uso da terra na sustentabilidade dos biocombustíveis. |
|
Ano de publicação: |
2014 |
|
Fonte/Imprenta: |
Londrina: Embrapa Soja, 2014. |
|
Páginas: |
82 p. |
|
Série: |
(Embrapa Soja. Documentos, 347). |
|
ISSN: |
1516-781X |
|
Idioma: |
Português |
|
Conteúdo: |
O conceito de mudança indireta do uso da terra e suas implicações: Introdução. Demanda, preços e mudança no uso da terra. Os modelos para cálculo das emissões por ILUC. Questionamentos dos modelos. Propostas de melhorias nos modelos. Contexto e lógica. A formulação teórica e a indução de normas. Eficiência energética e emissões: estudos e controvérsia. 7. Crítica e polêmica. 8. Implementação dos regulamentos 9. Padrões de Combustíveis Renováveis da EPA. 10. Reações. Reino Unido. União Europeia. Sistema de Certificação. Conclusões do Capítulo.Cotejando o ILUC com as estatísticas de produção e uso da terra: Introdução. Contexto. O recurso terra. A produção de biocombustíveis. O uso da terra. Análise da série histórica vis a vis modelos preditivos de ILUC. Conclusões do Capítulo II. |
|
Palavras-Chave: |
Bicombustível. |
|
Thesagro: |
Biocombustível; Combustível; Energia; Uso da terra. |
|
Thesaurus Nal: |
Biofuels; Energy crops. |
|
Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/95502/1/Doc-347.pdf
|
|
Marc: |
LEADER 01431nam a2200229 a 4500
001 1976599
005 2014-08-14
008 2014 bl uuuu 00u1 u #d
022 $a1516-781X
100 1 $aGAZZONI, D. L.
245 $aO impacto do uso da terra na sustentabilidade dos biocombustíveis.
260 $aLondrina: Embrapa Soja$c2014
300 $a82 p.
490 $a(Embrapa Soja. Documentos, 347).
520 $aO conceito de mudança indireta do uso da terra e suas implicações: Introdução. Demanda, preços e mudança no uso da terra. Os modelos para cálculo das emissões por ILUC. Questionamentos dos modelos. Propostas de melhorias nos modelos. Contexto e lógica. A formulação teórica e a indução de normas. Eficiência energética e emissões: estudos e controvérsia. 7. Crítica e polêmica. 8. Implementação dos regulamentos 9. Padrões de Combustíveis Renováveis da EPA. 10. Reações. Reino Unido. União Europeia. Sistema de Certificação. Conclusões do Capítulo.Cotejando o ILUC com as estatísticas de produção e uso da terra: Introdução. Contexto. O recurso terra. A produção de biocombustíveis. O uso da terra. Análise da série histórica vis a vis modelos preditivos de ILUC. Conclusões do Capítulo II.
650 $aBiofuels
650 $aEnergy crops
650 $aBiocombustível
650 $aCombustível
650 $aEnergia
650 $aUso da terra
653 $aBicombustível
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Clima Temperado; Embrapa Rondônia. |
|
Data corrente: |
14/06/2021 |
|
Data da última atualização: |
15/09/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
MORAES, F. P. de; D'AVILA, C. A.; OLIVEIRA, F. C. de; CASTRO, N. A. de; VIEIRA, A. D.; SCHNEIDER, A.; PFEIFER, L. F. M.; PEGORARO, L. M. C.; FERREIRA, R.; FERST, J. G.; ROVANI, M. T.; CORREA, M. N.; GONÇALVES, P. B. D.; LUCIA JUNIOR, T.; GASPERIN, B. G. |
|
Afiliação: |
FABIANE PEREIRA DE MORAES, Federal University of Pelotas; CAMILA AMARAL D'AVILA, Federal University of Pelotas; FERNANDO CAETANO DE OLIVEIRA, Federal University of Pelotas; NATALIA ÁVILA DE CASTRO, Federal University of Pelotas; ARNALDO DINIZ VIEIRA, Federal University of Pelotas; AUGUSTO SCHNEIDER, Federal University of Pelotas; LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO; LIGIA MARGARETH CANTARELLI PEGORARO, CPACT; ROGERIO FERREIRA, Santa Catarina State University; JULIANA GERMANO FERST, Federal University of Santa Maria; MONIQUE TOMAZELE ROVANI, Federal University of Rio Grande do Sul; MARCIO NUNES CORREA, Federal University of Pelotas; PAULO BAYARD DIAS GONÇALVES, Federal University of Santa Maria / Federal University of Pampa; THOMAZ LUCIA JUINOR, Federal University of Pelotas; BERNARDO GARZIERA GASPERIN, Federal University of Pelotas. |
|
Título: |
Prostaglandin F2a regulation and function during ovulation and luteinization in cows. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Theriogenology, v. 171, p. 30-37, Sept. 2021. |
|
ISSN: |
0093-691X |
|
DOI: |
https://doi.org/10.1016/j.theriogenology.2021.05.008 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Although prostaglandins are important in the ovulation process, a precise role for prostaglandin F2a (PGF) has not been elucidated. This study aimed to evaluate the regulation of PGF receptor mRNA (PTGFR) in granulosa cells and the local effect of PGF on ovulation and luteinization. In Experiment 1, using samples collected in vivo before (Day 2), during (Day 3) and after (Day 4) follicular deviation, expression of PTGFR in bovine granulosa cells was more abundant in the dominant follicle after deviation than in subordinates (P < 0.05). However, the expression of PTGFR was not regulated (P ¼ 0.1) in preovulatory follicles at different time-points (0, 3, 6, 12 and 24 h) after ovulation induction with GnRH. In Experiment 2, to assess the role of systemic PGF treatment on luteinization and vascularization of preovulatory follicles, flunixin meglumine (FM), a nonsteroidal anti-inflammatory drug, was used to inhibit endogenous prostaglandin synthesis. Cows with preovulatory follicles were induced to ovulate with GnRH (0 h) and allocated to three groups: Control, with no further treatment; FM, treated with 2.2 mg/kg FM im 17 h after GnRH treatment; and FM þ PGF, treated with FM 17 h after GnRH, followed by 25 mg dinoprost tromethamine (PGF) 23 h after GnRH treatment. FM injection was able to reduce the concentration of PGF in the follicular fluid (FF) (P < 0.001). However, contrary to our hypothesis, color Doppler ultrasound evaluations revealed decreased vascular flow in FM þ PGF group (P < 0.05), and no effect of the treatments on intrafollicular P4 and E2 concentrations 24 h after GnRH. The prostaglandin metabolite (PGFM) concentrations in the FF were greater in cows receiving systemic PGF (P < 0.001), which prompted us to further check its role on ovulation. Therefore, in Experiment 3, in a final attempt to demonstrate the local effect of PGF on ovulation, cows with preovulatory follicles received an intrafollicular injection (IFI) of PBS (Control) or 100 ng/mL purified PGF (PGF group). PGF treatment did not affect the time of ovulation after IFI (66 ± 6.4 and 63 ± 8.5 h for control and PGF, respectively; P > 0.05), further suggesting that it has no direct effect in the ovulatory process. Based on our findings, we concluded that FM decreased PGF synthesis within the follicle, whereas PGF treatment decreased follicular vascularization. In addition, the in vivo model of intrafollicular injection evidenced that PGF alone is not able to locally induce ovulation. MenosAlthough prostaglandins are important in the ovulation process, a precise role for prostaglandin F2a (PGF) has not been elucidated. This study aimed to evaluate the regulation of PGF receptor mRNA (PTGFR) in granulosa cells and the local effect of PGF on ovulation and luteinization. In Experiment 1, using samples collected in vivo before (Day 2), during (Day 3) and after (Day 4) follicular deviation, expression of PTGFR in bovine granulosa cells was more abundant in the dominant follicle after deviation than in subordinates (P < 0.05). However, the expression of PTGFR was not regulated (P ¼ 0.1) in preovulatory follicles at different time-points (0, 3, 6, 12 and 24 h) after ovulation induction with GnRH. In Experiment 2, to assess the role of systemic PGF treatment on luteinization and vascularization of preovulatory follicles, flunixin meglumine (FM), a nonsteroidal anti-inflammatory drug, was used to inhibit endogenous prostaglandin synthesis. Cows with preovulatory follicles were induced to ovulate with GnRH (0 h) and allocated to three groups: Control, with no further treatment; FM, treated with 2.2 mg/kg FM im 17 h after GnRH treatment; and FM þ PGF, treated with FM 17 h after GnRH, followed by 25 mg dinoprost tromethamine (PGF) 23 h after GnRH treatment. FM injection was able to reduce the concentration of PGF in the follicular fluid (FF) (P < 0.001). However, contrary to our hypothesis, color Doppler ultrasound evaluations revealed decreased vascular flow in FM þ PGF ... Mostrar Tudo |
|
Palavras-Chave: |
Ação anti-inflamatória; F2a; Luteinização. |
|
Thesagro: |
Ovulação; Prostaglandina; Reprodução Animal; Vaca. |
|
Thesaurus NAL: |
Animal reproduction; Anti-inflammatory activity; Cows; Luteinization; Ovulation; Prostaglandins. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 03837naa a2200469 a 4500
001 2132284
005 2021-09-15
008 2021 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $ahttps://doi.org/10.1016/j.theriogenology.2021.05.008$2DOI
100 1 $aMORAES, F. P. de
245 $aProstaglandin F2a regulation and function during ovulation and luteinization in cows.$h[electronic resource]
260 $c2021
520 $aAlthough prostaglandins are important in the ovulation process, a precise role for prostaglandin F2a (PGF) has not been elucidated. This study aimed to evaluate the regulation of PGF receptor mRNA (PTGFR) in granulosa cells and the local effect of PGF on ovulation and luteinization. In Experiment 1, using samples collected in vivo before (Day 2), during (Day 3) and after (Day 4) follicular deviation, expression of PTGFR in bovine granulosa cells was more abundant in the dominant follicle after deviation than in subordinates (P < 0.05). However, the expression of PTGFR was not regulated (P ¼ 0.1) in preovulatory follicles at different time-points (0, 3, 6, 12 and 24 h) after ovulation induction with GnRH. In Experiment 2, to assess the role of systemic PGF treatment on luteinization and vascularization of preovulatory follicles, flunixin meglumine (FM), a nonsteroidal anti-inflammatory drug, was used to inhibit endogenous prostaglandin synthesis. Cows with preovulatory follicles were induced to ovulate with GnRH (0 h) and allocated to three groups: Control, with no further treatment; FM, treated with 2.2 mg/kg FM im 17 h after GnRH treatment; and FM þ PGF, treated with FM 17 h after GnRH, followed by 25 mg dinoprost tromethamine (PGF) 23 h after GnRH treatment. FM injection was able to reduce the concentration of PGF in the follicular fluid (FF) (P < 0.001). However, contrary to our hypothesis, color Doppler ultrasound evaluations revealed decreased vascular flow in FM þ PGF group (P < 0.05), and no effect of the treatments on intrafollicular P4 and E2 concentrations 24 h after GnRH. The prostaglandin metabolite (PGFM) concentrations in the FF were greater in cows receiving systemic PGF (P < 0.001), which prompted us to further check its role on ovulation. Therefore, in Experiment 3, in a final attempt to demonstrate the local effect of PGF on ovulation, cows with preovulatory follicles received an intrafollicular injection (IFI) of PBS (Control) or 100 ng/mL purified PGF (PGF group). PGF treatment did not affect the time of ovulation after IFI (66 ± 6.4 and 63 ± 8.5 h for control and PGF, respectively; P > 0.05), further suggesting that it has no direct effect in the ovulatory process. Based on our findings, we concluded that FM decreased PGF synthesis within the follicle, whereas PGF treatment decreased follicular vascularization. In addition, the in vivo model of intrafollicular injection evidenced that PGF alone is not able to locally induce ovulation.
650 $aAnimal reproduction
650 $aAnti-inflammatory activity
650 $aCows
650 $aLuteinization
650 $aOvulation
650 $aProstaglandins
650 $aOvulação
650 $aProstaglandina
650 $aReprodução Animal
650 $aVaca
653 $aAção anti-inflamatória
653 $aF2a
653 $aLuteinização
700 1 $aD'AVILA, C. A.
700 1 $aOLIVEIRA, F. C. de
700 1 $aCASTRO, N. A. de
700 1 $aVIEIRA, A. D.
700 1 $aSCHNEIDER, A.
700 1 $aPFEIFER, L. F. M.
700 1 $aPEGORARO, L. M. C.
700 1 $aFERREIRA, R.
700 1 $aFERST, J. G.
700 1 $aROVANI, M. T.
700 1 $aCORREA, M. N.
700 1 $aGONÇALVES, P. B. D.
700 1 $aLUCIA JUNIOR, T.
700 1 $aGASPERIN, B. G.
773 $tTheriogenology$gv. 171, p. 30-37, Sept. 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Rondônia (CPAF-RO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
